package com.mianshi;

/**
 * @description:
 * @author: 孙 峰
 * @time: 2020/11/4 20:11
 */
public class StringTest2 {
    public static void main(String[] args) {
        String ab="ab";
        String s = new String("a")+"b";
        System.out.println(ab==s);
        StringBuilder stringBuilder = new StringBuilder();
        StringBuffer stringBuffer = new StringBuffer();
        stringBuffer.append("a");
    }
}
